684 lines
22 KiB
QBasic
684 lines
22 KiB
QBasic
'***********************************************************************
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'** SUPERCHASE **
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'** REMIX! **
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'** **
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'** 3 different versions of the same game into one program! **
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'** **
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'** - Original VIC-20 version by Anthony Godshall - October 1982 **
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'** - Atari version by someone @ Compute! Gazette **
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'** - TI-99 4/A version by Cheryl Regena **
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'** **
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'** Written in XC-BASIC 3.1.0 by @JJFlash@mastodon.social - Oct 2022 **
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'** XC-BASIC created by Csaba Fekete! - https://xc-basic.net/ **
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'** **
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'** WORK IN PROGRESS!! **
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'***********************************************************************
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'------------------------INITIAL-SETUP----------------------------------
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Dim SHARED scrAddrCache(25) as WORD @loc_scrAddrCache ' 0 -> 24
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loc_scrAddrCache:
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DATA AS WORD 1024, 1064, 1104, 1144, 1184, 1224, 1264, 1304, 1344, 1384
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DATA AS WORD 1424, 1464, 1504, 1544, 1584, 1624, 1664, 1704, 1744, 1784
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DATA AS WORD 1824, 1864, 1904, 1944, 1984
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poke 53280, 0 : poke 53281, 0
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'~ memcpy @LOC_charset_addr, $3800, 1000
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poke $D018, %00011111 'screen $0400, char location: $3800
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poke 657, 128 'disable upper-lower case change
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VOLUME 15
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'-----------------------------------------------------------------------
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'-------------------------CONSTANTS-------------------------------------
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SHARED Const TRUE = 255
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SHARED Const FALSE = 0
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SHARED Const SPACE = 81
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Const WALL = 96
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Const EX_WALL = 98
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Const DOOR_CLOSED = 97
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Const DOOR_CLOSED_REVERSED = 99
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SHARED Const DOOR_OPEN = 88
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SHARED Const MONSTER = 68
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Const MONSTER_ALT = 69
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SHARED Const TRAIL = 80
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Const TREASURES = 112
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SHARED Const TREASURE_GOLD = 116
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SHARED Const MASK_WALKABLE = 16 '0001 0000
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SHARED Const MASK_ALL = 48 '0011 0000
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SHARED Const GROUP_CREATURES = 0 '0000 0000
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SHARED Const GROUP_WALKABLE = 16 '0001 0000
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SHARED Const GROUP_TREASURE = 48 '0011 0000
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SHARED Const EVENT_NONE = 0
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SHARED Const EVENT_PLAYER_CAUGHT = 1
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SHARED Const EVENT_PLAYER_EXITED = 2
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SHARED Const VIC_COLOR_OFFSET = $D400
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SHARED Const VOI1_S = 3
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SHARED Const VOI1_R = 3
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SHARED Const VOI2_S = 8
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SHARED Const VOI2_R = 5
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Const VOI3_S = 7
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Const VOI3_R = 8
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'-----------------------------------------------------------------------
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'-----------------GAME-STATE-&-GLOBAL-STUFF-----------------------------
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Dim SHARED bPeekedTileContent as BYTE
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Dim bFrameCounter as BYTE
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Dim bAnimFrameCounter as BYTE
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Dim SHARED iDirections(4) as INT @loc_iDirections
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loc_iDirections:
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DATA as INT 1, -40, -1, 40 'east, north, west, south
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Dim wDoorAddress as WORD
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Dim wDoorColorAddress as WORD
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Dim wGoldColorAddress as WORD
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Dim SHARED bSkillLevel as BYTE : bSkillLevel = 1
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Dim SHARED wScore as WORD
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Dim wLastExitScore as WORD : wLastExitScore = 0
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Dim bTreasures_Quantity as BYTE FAST
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Dim SHARED bTreasuresCollected as BYTE
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Dim SHARED bTreasuresToActivateMonster as BYTE : bTreasuresToActivateMonster = 1
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Dim SHARED bTreasuresToOpenDoor as BYTE
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Dim SHARED bMonsterIsOn as BYTE
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Dim SHARED bGoldNotCollected as BYTE
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Dim SHARED bExitEvent as BYTE
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Dim wNoteTable(4) as WORD @loc_wNoteTable
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loc_wNoteTable:
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DATA as WORD $4495, $5669, $6602, $892B 'C6, E6, G6, C7
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Dim bSoundIndex as BYTE
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Dim SHARED bSoundTimer_GoldTaken as BYTE
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Dim SHARED bSoundTimer_TreasureTaken as BYTE
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Dim wEventSound as WORD
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Dim N as BYTE FAST
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Dim SHARED bJoystick2 as BYTE
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declare sub generateMaze () STATIC
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declare sub placeDoor() STATIC
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declare sub drawInfoBox() STATIC
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declare sub shakeScreen() STATIC
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declare sub mazeShiftAway() STATIC
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declare sub openDoorAnimation() SHARED STATIC
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declare sub timedSounds() STATIC
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declare sub colouredFrame() STATIC
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declare sub titleScreen() STATIC
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declare sub playerAppears() STATIC
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declare sub placeCharset() STATIC
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'-----------------------------------------------------------------------
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'------------------HELPER FUNCTIONS-------------------------------------
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function myRandom as BYTE (bMax as BYTE, bMask as BYTE) SHARED STATIC
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do
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myRandom = RNDB() AND bMask
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loop while myRandom > bMax
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end function
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function myByteABS as BYTE (bNumber as BYTE) SHARED STATIC
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if (bNumber AND 128) = 128 then bNumber = (NOT bNumber) + 1
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return bNumber
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end function
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'-----------------------------------------------------------------------
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'------------------------INCLUDES---------------------------------------
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include "inc_player.bas"
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include "inc_monster.bas"
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'-----------------------------------------------------------------------
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'------------------TITLE SCREEN-----------------------------------------
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sys $E544 FAST ' clear screen
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call placeCharset()
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call titleScreen()
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'-------------------GAME-START------------------------------------------
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'~ Dim lRandomSeed as LONG : lRandomSeed = clong(248) ' <<<<<<<<<<<<<<<------------- RANDOM!!!
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sys $E544 FAST ' clear screen
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textat 32, 0, "super", 1 'white
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textat 33, 1, "chase!", 1 'white
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textat 32, 7, "skill", 5 'green
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textat 33, 8, "level", 5 'green
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textat 32, 13, "score", 3 'cyan
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textat 32, 18, "speed", 7 'yellow
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'~ Randomize (TI() * (clong(peek( $D012)) + clong(1)))
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Randomize TI()
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For N = 1 to 10 : bPeekedTileContent = RNDB() : Next N ' bPeekedTileContent used here as a dummy variable!
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'------------------LEVEL-START------------------------------------------
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restartLevel:
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For N as BYTE = 0 to 24
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memset scrAddrCache(N), 31, WALL
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memset VIC_COLOR_OFFSET + scrAddrCache(N), 31, 6 'blue
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Next N
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'~ lRandomSeed = lRandomSeed + clong(1)
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'~ textat 33, 23, str$(lRandomSeed), 14 'light blue
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'~ Randomize (lRandomSeed)
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'~ For N = 1 to 10 : bPeekedTileContent = RNDB() : Next N ' bPeekedTileContent used here as a dummy variable!
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call generateMaze()
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'~ textat 33, 24, str$(bTreasures_Quantity), 7 'yellow
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call placeDoor()
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'********LEVEL INIT**********
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bFrameCounter = 0
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bSoundIndex = 255
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bSoundTimer_TreasureTaken = 0
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bSoundTimer_GoldTaken = 0
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VOICE 3 WAVE TRI ADSR 0, 0, VOI3_S, VOI3_R OFF
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wScore = wLastExitScore
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bTreasuresCollected = 0
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bExitEvent = EVENT_NONE
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textat 33, 10, bSkillLevel, 1 'white
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memset 1657, 5, 32 'erase previous printed score
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textat 33, 15, wScore, 10 'light red
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textat 33, 20, "1 ", 2 'red
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bTreasuresToOpenDoor = shr(bTreasures_Quantity, 1)
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if bSkillLevel < bTreasuresToOpenDoor then
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bTreasuresToOpenDoor = bTreasuresToOpenDoor + bSkillLevel
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else
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bTreasuresToOpenDoor = bTreasures_Quantity
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end if
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'~ textat 36, 24, str$(bTreasuresToOpenDoor), 12 'gray
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call playerAppears()
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call initPlayer()
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call initMonster()
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'-------------------------MAIN LOOP!------------------------------------
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do
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on bFrameCounter goto actorMovement, endFrame, mainAnimation, endFrame
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actorMovement:
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'-------PLAYER MOVEMENT-----------------
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call playerMovement()
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if bExitEvent then exit do
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'~ textat 33, 22, str$(bTreasuresCollected) + " ", 15 ' light gray
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'-------MONSTER MOVEMENT-----------------
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if bMonsterIsOn then
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call handleMonster()
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if bExitEvent then exit do
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end if
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goto endFrame
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'-------------------------------------------------------------------
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mainAnimation:
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if bGoldNotCollected then poke wGoldColorAddress, peek(wGoldColorAddress) XOR 6 'alternates white, yellow, white, yellow, ...
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charat bPlayer_Col, bPlayer_Row, bPlayer_FacingCharacter XOR 1, 13 'light green
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VOICE 1 OFF
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if bMonsterIsOn then
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if bMonster_SpeedUpMode then
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call handleMonster()
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if bExitEvent then exit do
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else
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charat bMonster_Col, bMonster_Row, MONSTER_ALT, 2 'red
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VOICE 2 OFF
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end if
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end if
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'-------------------------------------------------------------------
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endFrame:
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'~ if (peek( $DC00) AND 16) = 0 then goto restartGame
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'~ if (peek( $DC00) AND 16) = 0 then poke wDoorAddress, DOOR_CLOSED : call openDoorAnimation()
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'~ if (peek( $DC00) AND 16) = 0 then bAnimTimer_GoldTaken = 16
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'~ if (peek( $DC00) AND 16) = 0 then call colouredFrame() : wait $DC00, 16
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'~ if (peek( $DC00) AND 16) = 0 then call playerAppears()
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call timedSounds()
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wait $d011, 128, 128 : wait $d011, 128 : wait $d011, 128, 128 : wait $d011, 128
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bFrameCounter = (bFrameCounter + 1) AND 3
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loop
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if bExitEvent = EVENT_PLAYER_CAUGHT then
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call shakeScreen()
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call drawInfoBox()
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textat 8, 12, "a tasty morsel", 8 'orange
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textat 12, 13, "indeed!", 8 'orange
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wait $DC00, 16, 16 'wait for fire to be pressed
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else
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call drawInfoBox()
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textat 8, 12, "congratulations!", 7 'yellow
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textat 6, 13, "onto the next level!", 7 'yellow
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wLastExitScore = wScore
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if bSkillLevel < 255 then bSkillLevel = bSkillLevel + 1
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call colouredFrame()
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call mazeShiftAway()
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end if
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goto restartLevel
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'------------GAME-SUBROUTINES-------------------------------------------
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sub generateMaze () STATIC
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Dim bRow as BYTE FAST
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Dim bCol as BYTE FAST
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Dim bRowEnd as BYTE FAST
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Dim bColEnd as BYTE FAST
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memset 1065, 5, EX_WALL
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poke 1105, EX_WALL
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poke 1145, EX_WALL
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poke 1185, EX_WALL
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poke 1225, EX_WALL
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For N = 1 to 65
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bCol = shl(myRandom(13, 15), 1) + 1
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bRow = shl(myRandom(11, 15), 1) + 1
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bColEnd = bCol + 6 : if bColEnd > 29 then bColEnd = 29
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memset scrAddrCache(bRow) + bCol, bColEnd - bCol + 1, EX_WALL
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Next N
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For N = 1 to 60
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bCol = shl(myRandom(14, 15), 1) + 1
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bRow = shl(myRandom(10, 15), 1) + 1
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bRowEnd = bRow + 4 : if bRowEnd > 23 then bRowEnd = 23
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For K AS BYTE = bRow to bRowEnd
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poke scrAddrCache(K) + bCol, EX_WALL
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Next K
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Next N
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Dim wCalcScreenAddress as WORD FAST
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Dim bStackPointer as BYTE FAST
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Dim wFilledCells as WORD FAST
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Dim wPatchScrAddress as WORD
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Dim wStack(128) as WORD
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bStackPointer = 1 : wFilledCells = 0
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wStack(0) = 1065 'player starting position: Row 1, Column 1
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wPatchScrAddress = 1226 'row 5, column 2
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Const PATCHSCRADDRESS_END = 1253 'row 5, column 29
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Dim bTreasures_Color(5) as BYTE @loc_bbTreasures_Color
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loc_bbTreasures_Color:
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DATA AS BYTE 12, 9, 10, 8, 7 'gray, brown, light red, orange, yellow
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Dim bTreasures_Sequence(51) as BYTE @loc_bTreasures_Sequence
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'26 treasure 0, 15 treasure 1, 12 treasure 2, 7 treasure 3, 1 treasure 4 (gold!)
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loc_bTreasures_Sequence:
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'0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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'1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
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'2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
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'3, 3, 3, 3, 3, 3, 3
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' 4
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DATA AS BYTE 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 4
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DATA AS BYTE 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 0, 1, 0, 1, 0
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Dim bTreasures_Index as BYTE : bTreasures_Index = 0
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Dim bTileType as BYTE
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Dim bTileColor as BYTE
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bTreasures_Quantity = 0
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bGoldNotCollected = FALSE 'in the event the Gold treasure doesn't show up...
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do
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bStackPointer = bStackPointer - 1
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wCalcScreenAddress = wStack(bStackPointer)
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do while peek(wCalcScreenAddress) = EX_WALL
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wCalcScreenAddress = wCalcScreenAddress - cword(1)
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loop
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wCalcScreenAddress = wCalcScreenAddress + cword(1)
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do while peek(wCalcScreenAddress) = EX_WALL
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bTileType = SPACE
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if wFilledCells > 5 then
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If myRandom(5, 7) = 5 then
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bTileType = TREASURES + bTreasures_Sequence(bTreasures_Index)
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if bTileType = TREASURE_GOLD then wGoldColorAddress = VIC_COLOR_OFFSET + wCalcScreenAddress : bGoldNotCollected = TRUE
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bTileColor = bTreasures_Color(bTileType AND 7)
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if bTreasures_Index < 50 then bTreasures_Index = bTreasures_Index + 1
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bTreasures_Quantity = bTreasures_Quantity + 1
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end if
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end if
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poke wCalcScreenAddress, bTileType : poke VIC_COLOR_OFFSET + wCalcScreenAddress, bTileColor
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wFilledCells = wFilledCells + 1
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wCalcScreenAddress = wCalcScreenAddress - cword(40) 'one row UP
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if peek(wCalcScreenAddress) = EX_WALL then
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wStack(bStackPointer) = wCalcScreenAddress
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bStackPointer = bStackPointer + 1
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end if
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wCalcScreenAddress = wCalcScreenAddress + cword(80) 'back to the original row + one row DOWN
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if peek(wCalcScreenAddress) = EX_WALL then
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wStack(bStackPointer) = wCalcScreenAddress
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bStackPointer = bStackPointer + 1
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end if
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wCalcScreenAddress = wCalcScreenAddress - cword(39) 'one row UP + one column RIGHT
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loop
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if bStackPointer = 0 then
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if wFilledCells < 280 then
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do until peek(wPatchScrAddress) = WALL
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wPatchScrAddress = wPatchScrAddress + 1
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if wPatchScrAddress > PATCHSCRADDRESS_END then exit sub
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loop
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poke wPatchScrAddress, EX_WALL
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wStack(bStackPointer) = wPatchScrAddress
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bStackPointer = 1
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else
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exit sub
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end if
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end if
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loop
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end sub
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sub placeDoor() STATIC
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Dim wStartingDoorAddress as WORD FAST
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wStartingDoorAddress = scrAddrCache(myRandom(22, 31) + 1) + 29 'Col 29, Row random
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Dim wMaxDoorAddress as WORD FAST : wMaxDoorAddress = $07DD 'Col 29, Row 24
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Dim wMinDoorAddress as WORD FAST : wMinDoorAddress = $0445 'Col 29, Row 1
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wDoorAddress = wStartingDoorAddress
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do
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if (peek(wDoorAddress) AND MASK_WALKABLE) = GROUP_WALKABLE then
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wDoorAddress = wDoorAddress + 1
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poke wDoorAddress, DOOR_CLOSED
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wDoorColorAddress = VIC_COLOR_OFFSET + wDoorAddress
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poke wDoorColorAddress, 14 'light blue
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exit sub
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end if
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wDoorAddress = wDoorAddress + 40
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if wDoorAddress = wMaxDoorAddress then wDoorAddress = wMinDoorAddress
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if wDoorAddress = wStartingDoorAddress then
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wStartingDoorAddress = wStartingDoorAddress - 1
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wDoorAddress = wStartingDoorAddress
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wMaxDoorAddress = wMaxDoorAddress - 1
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wMinDoorAddress = wMinDoorAddress - 1
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end if
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loop
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end sub
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sub drawInfoBox() STATIC
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'~ textat 4, 11, "{168}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{171}{173}", 6 'blu
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'~ textat 4, 12, "{169} {174}", 6 'blu
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'~ textat 4, 13, "{169} {174}", 6 'blu
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'~ textat 4, 14, "{170}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{172}{175}", 6 'blu
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poke 1468, 104 'col 4, row 11
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memset 1469, 21, 107 'col 5-25, row 11
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poke 1490, 109 'col 26, row 11
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poke 1508, 105 'col 4, row 12
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memset 1509, 21, 32 'col 5-25, row 12
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poke 1530, 110 'col 26, row 12
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poke 1548, 105 'col 4, row 13
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memset 1549, 21, 32 'col 5-25, row 13
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poke 1570, 110 'col 26, row 13
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poke 1588, 106 'col 4, row 14
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memset 1589, 21, 108 'col 5-25, row 14
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poke 1610, 111 'col 26, row 14
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memset 55740, 23, 6 'blu
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memset 55780, 23, 6 'blu
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memset 55820, 23, 6 'blu
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memset 55860, 23, 6 'blu
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end sub
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sub shakeScreen() STATIC
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Dim bVariance as BYTE
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VOICE 1 OFF
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VOICE 2 ON
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VOICE 3 OFF WAVE SAW
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bVariance = 7
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bAnimFrameCounter = 0
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wEventSound = 1382
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do
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poke $D011, %10011000 OR ((3 + myRandom(bVariance, 7)) AND 7)
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poke $D016, %00001000 OR myRandom(bVariance, 7)
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VOICE 3 TONE wEventSound ON
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wait $d011, 128, 128 : wait $d011, 128
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bAnimFrameCounter = (bAnimFrameCounter + 1) AND 3
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if bAnimFrameCounter = 0 then bVariance = bVariance - 1
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wEventSound = wEventSound - 40
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loop until bVariance = 255
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VOICE 2 OFF
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VOICE 3 OFF
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end sub
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sub mazeShiftAway() STATIC
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dim wLineAddress as WORD FAST : dim wColorLineAddress as WORD FAST
|
|
Dim nShiftLine as BYTE FAST
|
|
|
|
for nShiftLine = 0 to 24
|
|
wLineAddress = scrAddrCache(nShiftLine)
|
|
wColorLineAddress = VIC_COLOR_OFFSET + wLineAddress
|
|
memcpy wLineAddress + 1, wLineAddress, 31
|
|
memcpy wColorLineAddress + 1, wColorLineAddress, 31
|
|
next nShiftLine
|
|
|
|
for N = 0 to 15 '31 columns, 2 cells moved per frame, so 16 times
|
|
for nShiftLine = 0 to 24
|
|
wLineAddress = scrAddrCache(nShiftLine)
|
|
wColorLineAddress = VIC_COLOR_OFFSET + wLineAddress
|
|
memcpy wLineAddress + 2, wLineAddress, 30
|
|
memcpy wColorLineAddress + 2, wColorLineAddress, 30
|
|
next nShiftLine
|
|
wait $d011, 128
|
|
next N
|
|
end sub
|
|
|
|
sub openDoorAnimation() SHARED STATIC
|
|
Dim bDoorColor as BYTE : bDoorColor = 14 'light blue
|
|
Dim bDoorChar as BYTE : bDoorChar = DOOR_CLOSED_REVERSED
|
|
wEventSound = $7F00
|
|
|
|
VOICE 1 OFF
|
|
VOICE 2 OFF
|
|
VOICE 3 OFF WAVE PULSE ADSR 0, 0, 12, 1
|
|
|
|
For bAnimFrameCounter = 1 to 20
|
|
bDoorChar = bDoorChar XOR 2 'alternates normal door, reversed door, normal door, ... (or viceversa)
|
|
poke wDoorAddress, bDoorChar
|
|
bDoorColor = bDoorColor XOR 9 'alternates yellow, light blue, yellow, ...
|
|
poke wDoorColorAddress, bDoorColor
|
|
VOICE 3 TONE wEventSound PULSE 63 ON
|
|
wEventSound = wEventSound + 780
|
|
wait $d011, 128, 128 : wait $d011, 128 : wait $d011, 128, 128 : wait $d011, 128
|
|
if bAnimFrameCounter = 10 then bDoorChar = DOOR_OPEN 'changes from reversed closed door to NORMAL open door
|
|
Next bAnimFrameCounter
|
|
VOICE 3 OFF TONE 0 WAVE TRI ADSR 0, 0, VOI3_S, VOI3_R
|
|
bSoundTimer_TreasureTaken = 0
|
|
end sub
|
|
|
|
sub timedSounds() STATIC
|
|
dim bSoundPreviousIndex as BYTE
|
|
|
|
if bSoundTimer_GoldTaken then
|
|
VOICE 3 TONE shr(wNoteTable(bSoundIndex), 2) ON
|
|
bSoundIndex = (bSoundIndex + 1) AND 3
|
|
|
|
bSoundTimer_GoldTaken = bSoundTimer_GoldTaken - 1
|
|
if bSoundTimer_GoldTaken = 0 then VOICE 3 OFF : bSoundTimer_TreasureTaken = 0
|
|
exit sub
|
|
end if
|
|
|
|
if bSoundTimer_TreasureTaken then
|
|
bSoundPreviousIndex = bSoundIndex
|
|
do
|
|
bSoundIndex = myRandom(3, 3)
|
|
loop while bSoundIndex = bSoundPreviousIndex
|
|
|
|
VOICE 3 TONE wNoteTable(bSoundIndex) ON
|
|
|
|
bSoundTimer_TreasureTaken = bSoundTimer_TreasureTaken - 1
|
|
if bSoundTimer_TreasureTaken = 0 then VOICE 3 OFF
|
|
end if
|
|
end sub
|
|
|
|
sub colouredFrame() STATIC
|
|
Dim iFrameColorAddress as INT FAST
|
|
Dim bStripIndex as BYTE FAST
|
|
Dim bStartingStripIndex as BYTE FAST
|
|
Dim bStripColors(8) as BYTE @loc_bStripColors
|
|
loc_bStripColors:
|
|
DATA as BYTE 1, 1, 7, 7, 3, 3, 2, 2 'white, yellow, cyan, red
|
|
|
|
VOICE 1 OFF WAVE TRI TONE shr(wNoteTable(0), 4) ADSR 0, 11, 1, 10 ON
|
|
VOICE 2 OFF WAVE TRI TONE shr(wNoteTable(1), 1) ADSR 0, 11, 1, 10 ON
|
|
VOICE 3 OFF WAVE TRI TONE wNoteTable(2) ADSR 0, 11, 1, 10 ON
|
|
|
|
bStartingStripIndex = 0
|
|
|
|
do
|
|
bStripIndex = bStartingStripIndex
|
|
|
|
for iFrameColorAddress = $D800 to $D81E
|
|
poke iFrameColorAddress, bStripColors(bStripIndex)
|
|
bStripIndex = (bStripIndex + 1) AND 7
|
|
next iFrameColorAddress
|
|
for iFrameColorAddress = $D846 to $DBDE STEP 40
|
|
poke iFrameColorAddress, bStripColors(bStripIndex)
|
|
bStripIndex = (bStripIndex + 1) AND 7
|
|
next iFrameColorAddress
|
|
poke wDoorColorAddress, 13 'light green (Player is here)
|
|
for iFrameColorAddress = $DBDD to $DBC0 STEP -1
|
|
poke iFrameColorAddress, bStripColors(bStripIndex)
|
|
bStripIndex = (bStripIndex + 1) AND 7
|
|
next iFrameColorAddress
|
|
for iFrameColorAddress = $DB98 to $D828 STEP -40
|
|
poke iFrameColorAddress, bStripColors(bStripIndex)
|
|
bStripIndex = (bStripIndex + 1) AND 7
|
|
next iFrameColorAddress
|
|
|
|
for bAnimFrameCounter = 1 to 5
|
|
wait $D011, 128, 128 : wait $D011, 128
|
|
if peek( $DC00) = %01101111 then exit do 'if fire button is pressed, exit
|
|
next bAnimFrameCounter
|
|
|
|
bStartingStripIndex = (bStartingStripIndex - 2) AND 7
|
|
loop
|
|
|
|
VOICE 1 TONE shr(wNoteTable(0), 3) OFF
|
|
VOICE 2 TONE shr(wNoteTable(0), 1) OFF
|
|
VOICE 3 TONE shl(wNoteTable(0), 1) OFF
|
|
end sub
|
|
|
|
sub titleScreen() STATIC
|
|
Const PLAYER_LOCATION = 1354
|
|
Const MONSTER_LOCATION = 1434
|
|
|
|
Dim sCredits(5) as STRING * 40 @loc_sCredits
|
|
loc_sCredits:
|
|
DATA as STRING * 40 " written by jjflash@itch.io "
|
|
DATA as STRING * 40 " original vic-20 game: anthony godshall "
|
|
DATA as STRING * 40 " atari graphics: compute! gazette "
|
|
DATA as STRING * 40 " ti99-4/a version: cheryl regena "
|
|
DATA as STRING * 40 " xc=basic 3: csaba fekete - xc-basic.net"
|
|
Dim bCreditIndex as BYTE
|
|
|
|
'treasure frame for title
|
|
memset 1036, 16, TREASURE_GOLD
|
|
memset 1236, 16, TREASURE_GOLD
|
|
memset 55308, 216, 7 'yellow
|
|
poke 1076, TREASURE_GOLD
|
|
poke 1116, TREASURE_GOLD
|
|
poke 1156, TREASURE_GOLD
|
|
poke 1196, TREASURE_GOLD
|
|
poke 1091, TREASURE_GOLD
|
|
poke 1131, TREASURE_GOLD
|
|
poke 1171, TREASURE_GOLD
|
|
poke 1211, TREASURE_GOLD
|
|
|
|
textat 15, 2, "superchase", 1 'white
|
|
textat 17, 3, "remix!", 1 'white
|
|
textat 13, 8, "treasure hunter", 3 'cyan
|
|
textat 13, 10, "monster of dungeons!", 7 'yellow
|
|
|
|
textat 12, 15, "choose skill level", 5 'green
|
|
textat 13, 19, "then press fire", 5 'green
|
|
|
|
charat 18, 17, 60, 10 'left arrow, light red
|
|
charat 22, 17, 62, 10 'right arrow, light red
|
|
|
|
poke PLAYER_LOCATION, PLAYER : poke 55626, 13 'light green
|
|
poke MONSTER_LOCATION, MONSTER : poke 55706, 2 'red
|
|
|
|
bCreditIndex = 0
|
|
do
|
|
textat 0, 24, sCredits(bCreditIndex), 15 'light gray
|
|
|
|
for bFrameCounter = 1 to 36
|
|
charat 20, 17, 48 + bSkillLevel, 1 'white
|
|
|
|
poke 55994, 10 'color for left arrow, light red
|
|
poke 55998, 10 'color for right arrow, light red
|
|
|
|
bJoystick2 = peek( $DC00) XOR 127
|
|
|
|
if (bJoystick2 AND 4) then 'left
|
|
poke 55994, 1 'color for left arrow, white
|
|
if bSkillLevel > 1 then bSkillLevel = bSkillLevel - 1
|
|
else
|
|
if (bJoystick2 AND 8) then 'right
|
|
poke 55998, 1 'color for right arrow, white
|
|
if bSkillLevel < 9 then bSkillLevel = bSkillLevel + 1
|
|
else
|
|
if (bJoystick2 AND 16) then 'fire
|
|
exit sub
|
|
end if
|
|
end if
|
|
end if
|
|
|
|
poke PLAYER_LOCATION, peek(PLAYER_LOCATION) XOR 1
|
|
poke MONSTER_LOCATION, peek(MONSTER_LOCATION) XOR 1
|
|
|
|
for bAnimFrameCounter = 1 to 6
|
|
wait $D011, 128, 128 : wait $D011, 128
|
|
next bAnimFrameCounter
|
|
|
|
next bFrameCounter
|
|
bCreditIndex = bCreditIndex + 1 : if bCreditIndex = 5 then bCreditIndex = 0
|
|
loop
|
|
|
|
end sub
|
|
|
|
sub playerAppears() STATIC
|
|
charat 1, 1, PLAYER_ALT, 0 'black
|
|
VOICE 1 WAVE PULSE TONE 10000 PULSE 2048 ADSR 0, 0, 2, 9 ON OFF
|
|
For bAnimFrameCounter = 1 to 21
|
|
poke $D829, peek( $D829) XOR 13 'row 1, col 1, light green
|
|
wait $d011, 128, 128 : wait $d011, 128
|
|
wait $d011, 128, 128 : wait $d011, 128
|
|
next bAnimFrameCounter
|
|
end sub
|
|
|
|
'-----------------------------------------------------------------------
|
|
sub placeCharset() STATIC
|
|
exit sub
|
|
origin $3800
|
|
incbin "charset_superchase.chr"
|
|
end sub
|
|
|